The place and its associated environmental conditions where an organism naturally lives, grows, and reproduces; such conditions include characteristics of the soil, water, and biologic community (for example, other plants and animals).
- The area or type of environment in which a plant or animal normally lives or occurs.
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A habitat area designated by a Fishery Management Council under the Magnuson-Stevens Fishery Conservation and Management Act of 1976 to help focus conservation efforts in localized areas that are vulnerable to degradation or are especially important ecologically.
- Browse Related Terms: Biological Opinion (BO), Essential Fish Habitat (EFH), Fish & Wildlife Service (FWS), Fishery Management Councils, Fishery Management Zone, Habitat Areas of Particular Concern (HAPC), Hazardous Waste Indicators, Jeopardy opinion, Magnuson-Stevens Fishery Conservation and Management Act, No jeopardy opinion, Sensitive species
- Salt-loving. Plants that thrive in soils that contain salt and/or sodium. A plant that grows in salty or alkaline soil.
- Browse Related Terms: Available capacity, Drip irrigation (trickle), Field (Moisture) Capacity, Halophytic, Permanent wilting point (permanent wilting percentage), Potential evapotranspiration, saline, Saline sodic land, Topsoil, Wilting point
- A support for pipe.
- Browse Related Terms: Annular space, Bailer, Bend, Branch, Butt joint (open joint), Casing, Deflect, Elongate, Fall, Field tile, Flange, Full hydraulic capacity, Gated pipe, Hanger, Haunches (haunch), import, Main, Manifold (Header), nipple, Nominal diameter, P.T, Perforated pipe, Run, Siphon, Siphonage, tile, Vertical curve
A mass of ice composed mainly of frazil or broken ice deposited underneath an ice cover in a region of low flow velocity.
- Browse Related Terms: Backsiphonage, Breakup Jam, Flocculation, Floe, Hanging (ice) dam, Hummock, Ice Gorge, Ridge
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- A characteristic of water determined by the levels of calcium and magnesium. Water hardness is largely the result of geological formations of the water source. Public acceptance of hardness varies. Hardness of more than 300-500 mg/l as calcium carbonate is considered excessive for a public water supply and results in high soap consumption as well as objectional scale in heating vessels and pipes, and sometimes causes objectionable tastes in drinking water. Many consumers object to water harder than 150 mg/l, a moderate figure being 60-120 mg/l.
- Browse Related Terms: ADR, ARP, Hardness, Intensity scale, Modified Mercalli scale, Option value, Richter scale
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- A hard, impervious layer, composed chiefly of clay, that is cemented by relatively insoluble materials, that does not become plastic when mixed with water, and definitely limits the downward movement of water and roots. A cemented or compacted layer of soil near the surface that is essentially impermeable to water. A hard, tight soil. A hard layer that may form just below plow depth on cultivated land.
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- An agricultural tool that loosens and works the ground surface.
- Browse Related Terms: Aerial cover, ASTS, Conjunctive use, Consolidation grouting, Corduroy, Effluent Seepage, Frost line, Geohydrology, Ground Water Overdraft, Harrow, Hydrogeochemistry, Hydrogeologist, Hydrogeology, Initial Detention, Offstream uses, Peak ground acceleration (PGA), Sacramento Soil Moisture Accounting Model (SACSMA), Scrape, Seashore, Snow Depth, Sprinkler irrigation, Terrain, Usable storage capacity, Withdrawal, Yield
- In a recreational fishery, refers to numbers of fish that are caught and kept. See catch.
- Browse Related Terms: Active capacity, Active conservation capacity (active storage), Active Conservation Storage, Attribute survey, Catch, Fishery Closure Area, Floatable days, Harvest, Inactive Storage Capacity, Instream use, Multipurpose dam, Multipurpose project, Multipurpose Reservoir, Recreation Area, Visitor use, Wild and Scenic Rivers Act (Public Law 90-542), Wilderness act
- A place for hatching fish eggs.
- Browse Related Terms: AFRP, Alevin, Anadromous, Angler-day, Cold-water fishery, Fish weir, Forage fish, Hatchery, ichthyology, Juvenile, Nonconsumptive water uses, Rough fish, Salmonids, Spawn, Warm-water fishery, Wetlands, Wildlife Refuge, Young-of-year
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- The distance measured along the center line or most direct practical route between the center of the mass of excavation and the center of mass of the fill as finally placed. It is the distance material is moved. Average haul is the average distance a grading material is moved from cut to fill. See overhaul.
- Browse Related Terms: Common excavation, cut, Cutting, Earth lining, Excavation, Foundation, Gravel blanket, Grubbing, Haul distance, Lift, Overexcavation, Overhaul, PASS, Pay formation, Spoil, Stripping, Swell, Through cut, Unclassified excavation
- The outside areas between the springline and the bottom of a pipe. In pipe, the sides of the lower third of the circumference.
- Browse Related Terms: Annular space, Bailer, Bend, Branch, Butt joint (open joint), Casing, Deflect, Elongate, Fall, Field tile, Flange, Full hydraulic capacity, Gated pipe, Hanger, Haunches (haunch), import, Main, Manifold (Header), nipple, Nominal diameter, P.T, Perforated pipe, Run, Siphon, Siphonage, tile, Vertical curve
- Something (e.g., a dam) that creates the potential for adverse consequences such as loss of life (LOL), property damage, and adverse social and environmental impacts. From a dam safety perspective, impacts may be from floodwaters released from dam structures or waters released by partial or complete failure of the dam. In this case, impacts would be to a defined area downstream. Impacts may also be to an area upstream of the dam from effects of backwater flooding or effects of landslides around the reservoir perimeter.
- Browse Related Terms: Catastrophe, Consequences, Direct Flood Damage, Emergency Action Plan, Emergency action plan (EAP), Exclusive Flood Control Storage Capacity, Flood control capacity, Flood Loss Reduction Measures, Hazard, Hazard classification, Incremental loss of life, Inflow design flood (IDF), Major Flooding, Minor Flooding, Moderate Flooding, Property Protection, River Observing Station
- The rating for a dam based on the potential consequences of failure. The rating is based on potential for loss of life and damage to property that failure of the dam could cause. Such classification is related to the amount of development downstream of a dam. Hazard classification is not associated with the existing condition of a dam and/or its appurtenant structures or the anticipated performance or operation of a dam. Rather, hazard classification is a statement of the most realistic adverse impact on human life and downstream developments should a designated dam fail. Hazard classification is used as a tool for prioritizing program activities, allocating resources for accomplishment of objectives, and scheduling safety of dams reassessments. See high hazard, low hazard, and significant hazard.
- Browse Related Terms: Catastrophe, Consequences, Direct Flood Damage, Emergency Action Plan, Emergency action plan (EAP), Exclusive Flood Control Storage Capacity, Flood control capacity, Flood Loss Reduction Measures, Hazard, Hazard classification, Incremental loss of life, Inflow design flood (IDF), Major Flooding, Minor Flooding, Moderate Flooding, Property Protection, River Observing Station
- Materials that pose the potential for grave, immediate, future, and genetic injury and illness when handled without proper equipment and precautions. Such materials may be toxic, flammable, explosive, corrosive, combinations of these, or otherwise injurious to life and health. Besides being potentially injurious to the discoverer of the materials, toxic materials may be transported to co-workers, children, or pets from shoes or clothing.
- Browse Related Terms: Annualized loss of life, APE, Decomposition, Effective peak ground acceleration, Esthetics, Failure potential assessment, Hazardous materials, Intangible Flood Damage, Job hazard analysis (JHA), Random earthquake, Risk, Uncertainty, Velocity Zones
- Element or compound other than oil which when discharged into the environment, in any quantity, presents an imminent or substantial threat to public health or welfare.
- Browse Related Terms: authorization, Books., Bridge, Class A, Bridge, Class B, Bridge, Class C, Hazardous substances, Manuals., Publics, Stakeholder, Tier 1, Tier 2, Water supplier
- Indicators that may signal the presence of hazardous materials include stressed vegetation or unusual lack of vegetation; dead or sick domestic stock, wildlife, or birds; fish kills or otherwise unexplained stream sterility or diminished species and numbers of flora and fauna; unusual coloration or discoloration of the land surface; and acrid or other chemical odors. However, some of the indicators may be ambiguous.
- Browse Related Terms: Biological Opinion (BO), Essential Fish Habitat (EFH), Fish & Wildlife Service (FWS), Fishery Management Councils, Fishery Management Zone, Habitat Areas of Particular Concern (HAPC), Hazardous Waste Indicators, Jeopardy opinion, Magnuson-Stevens Fishery Conservation and Management Act, No jeopardy opinion, Sensitive species
- Any spill, authorized or unauthorized dumping, abandoned, or inactive waste disposal sites containing or suspected of containing hazardous materials. Materials may be in drums, cylinders, canisters, sacks, or may be uncontained in piles of solids, pools of liquids, abandoned tailings, ponds, or as clouds of gasses.
- Browse Related Terms: Cairn, French drain, Galvanize, Hazardous waste sites, Mine tailings dam, Stockpile, Tailings
An Hourly Digital Rainfall Product of the WSR-88D.
- Browse Related Terms: Basin Lag, Excess Rain, Flash Flood Guidance (FFG), HDRAIN, Hyetograph, Isohyet, Lag (of a basin), Parametric Data, response time
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